Wrench.



JERE C. DUFRESNE, OF CLAREMONT, NEW HAMPSHIRE.

WRENCH.

Speccaton. of Letters Patent.

Patented Jan. 8, 1907.

Application filed February 13,1906. Serial NO- 300.885.

T0 @ZZ whom, t may con/cern:

Be it known that I, JERE C. DUERESNE, a citizen of the United States, residing at Claremont, in the county of Sullivan and State of New Hampshire, have invented new and useful Improvements in Wrenches, of which the following is a specification.

This invention relates to wrenches; and the object thereof is to provide a wrench, in a manner as hereinafter set forth,wherebyit will v not be necessary to cause the entire adjustment of the sliding jaw through the medium' of a screw, thereby considerablyT shortening the period of time necessary to adjust the sliding jaw with respect to the fixed jaw.

The invention further aims to provide a wrench which shall be simple in its construction, strong, durable, efficient in its use, readily and conveniently adjusted, and comparatively inexpensive to manufacture.

With the foregoing and other objects in view the invention consists of the novel construction, combination, and arrangement of parts hereinafter more specifically described, and illustrated in the accompanying drawings, which form a part of this specification, and wherein is shown the preferred embodiment of the invention 5 but it is to be understood that changes, variations, and modifications can be resorted to which come within the scope of the claims hereunto appended.

In describing the invention in detail reference is had to the accompanying drawings, wherein like reference characters denote corresponding parts throughout the several views, and in whichy Figure 1 is a sectional elevation of a wrench in accordance with this invention. Fig. 2 is a section on line 2 2, Fig. 1. Fig. 3 is a top plan view of the abutment member of the adjusting-slide. Fig. 4- is a rear view of the abutment member. Fig. 5 is a side elevation thereof, and Fig. 6 is an end view.

Referring to the drawings by reference characters, 4 denotes the shank of the wrench, carrying on one end the fixed jaw 5 and on its other end provided with a handle 6. One face of the shank 4 is provided with a series of teeth, as at 7, for a purpose to be hereinafter referred to.

Mounted upon the shank 4, so as to be slidable thereon, is the jaw 8, having a screwthreaded recess 9, in which operates the adjusting-screw 10, the latter having its lower end provided with a milled head 1 1, having a conoidal-shaped end 11a. for the purpose of assisting in holding the abutment member, to be hereinafter referred to, in mesh. The screw 10 is prevented from turning when occasion'so requires and from rotating within the recess 9 through the medium of the stopscrew 12, which is mounted in the j aw S and `extends in the recess 9, so as to engage in the threads of the screw 10.

Arranged upon the shank 4 and below the milled head 11 of the screw l0 is an adjusting-slide, which is formed of a yoke-shaped member 13 and an abutment member 15, the member 13 having the ends thereof secured, as at 14, to the member 15. The yoke 13 is of such length as to project away from one side of the shank 4, and interposed between the yoke 13 and the said side of the shank 4 is a spring 16, .whose function is to retain the abutment member in engagement with the teeth 7 of the shank. The abutment member 15 is formed with a series of teeth 17, which mesh with the teeth 7, formed on the shank 4, and when in engagement with said teeth 7 the adjustable slide is prevented from moving in one direction onthe shank 4. When moving in the other direction, the teeth of the member 15 can ride over the teeth of the shank 4. The abutment member 15 is provided with a cut-away portion 18, opening into a vertically-extending opening 19, through which extends a headed connectingbolt 20, having one end thereof screw-threaded and which engages in they milled head 11 of the adjusting-screw 10. By such an arrangement the adjusting-screw 10 is connected with the abutment member 15. The latter at its upper end is depressed, as at 21, and its lower end formed with an elongation 22, which bears against the shank 4 and acts as a shield to protect the teeth 17 when the wrench is closed, or nearly so. The abutment member 15 straddles one side of the shank 4, and to enable the said straddling of the shank the abutment 15 is provided with the lugs 23. These lugs 23 are formed integral with the abutment member 15 below the teeth 17 and extend at the side of the shank, and the lugs 23 not only prevent lateral movement of the abutment member, but also act in connection with the elongation 22 to protect the teeth 17.

When using the wrench, the spring 16 is compressed so as to cause the moving away of the teeth 17 of the abutment 15 from the IOO IIC

teeth 7 oi the shank 4. The adjusting-slide is then moved in one direction or the other upon the shank 4, such movement ofthe adjusting-slide carrying the jaw 8 therewith. After this movement has been made the final adjustment of the sliding jaw 8 is had through the medium of the screw 10. Owing to the arrangement of the parts it is evident that the adjusting-slide has the member 15 thereoi act as an abutmenty for the jaw 8 and screw 10, as the conoidal-shaped end of the milled head oi the screw 10 rests in the recess in the top of the member 15. The conoidalshaped end of the milled head of the screw 10 assists in holding the member 15 in mesh, Jfor it will be evident that when force is applied on the jaw 8 it causes the conoidal-shaped end of the milled head to enter into the re-' cess in the abutment member 15, consequently pushing .the teeth tighter as more force is applied. By setting up the wrench in the manner as set forth it is evident that it will not be necessary to cause the entire adjustment of the jaw 8 by means of an adjusting-screw, as a partial adjustment of the jaw 8 is had through the medium of the adjusting-slide, the screw 10 being only used to complete the adjustment for the jaw 8.

Having thus fully described my invention,

what I claim as new, and desire to secure by j the milled head of the screw Jfor connecting the jaw and the screw to the abutment.

2. A wrench having a slidable jaw provided with a screw-threaded recess, a screw extending in said recess and having a milled head provided with a conoidal-shaped end, a yoke, an abutment member secured thereto and having a recess adapted to receive the conoidal-shaped end of the milled head of said screw, said abutment member further provided with an opening, and a bolt extending through the opening and connected to the milled head of the screw for connecting the jaw and the screw to the abutment.

3. A wrench having a slidable jaw providedY with a screw-threaded recess, a screw extending in said recess and having a head, a yoke, an abutment member secured thereto and having a recess adapted to receive the head of the screw, said abutment member ,further provided with an opening, and a bolt extending through the opening and connected to the head of the screw for connecting the jaw and the screw to the abutment.

4. A wrench having a slidable jaw provided with a screw-threaded recess, a screw extending in said recess and having a head, a yoke, an abutment member secured thereto and having a recess adapted to receive the head of the screw, said abutment member further provided with an opening, a bolt extending through the opening and connected to the head of the screw for connecting the jaw and the screw to the abutment, and means carried by the slidable jaw and engaging the screw to prevent the turning thereof.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

JERE C. DUFRESNE. Witnesses z R. T. HART, CHAsII. LONG. 

